What is the concentration in percent by mass

Assignment Help Chemistry
Reference no: EM13162193

If 17.8 grams of KOH dissolve in enough water to make a 198-gram solution, what is the concentration in percent by mass?

Reference no: EM13162193

Questions Cloud

Designing sales and operations planning : What are the variables to consider in designing Sales and Operations Planning (S&OP)? Make answer as brief as possible.
Different forecasting methods : How do different forecasting methods work together and against each other to affect the demand forecast? Make answer as brief as possible.
What is the average rate of the reaction over time : In the first 12.0 s of the reaction, 1.8×10-2 mol of {rm{O}}_2 is produced in a reaction vessel with a volume of 0.260 L. What is the average rate of the reaction over this time interval?
Food safety and vectors-numerous reports : There has been several complaints in your community about dirty restaurants. Several restaurants are no longer in business as a result of a television expose. And R ecently there has been numerous reports on increased mosquito bites in several neigh..
What is the concentration in percent by mass : If 17.8 grams of KOH dissolve in enough water to make a 198-gram solution, what is the concentration in percent by mass.
What is the average rate of reaction over this time interval : In the first 12.0 s of the reaction, 1.8×10-2 moles of O2 is produced in a reaction vessel with a volume of 0.260 L. What is the average rate of the reaction over this time interval?
How many grams of ethylene glycol would be needed : How many grams of ethylene glycol would be needed to prevent 4kg of water from freezing above -5.0 degress C
Which substance required more thermal energy to reach : 100g of water (specific heat=4.184 J/g*C) and 100g of a metal sample (specific heat=0.397 J/g*C) are heated from 25 degrees celcius to 75 degrees celcius. Which substance required more thermal energy to reach 75 degrees celcius?
Calculate the hno3 in aqueous : Calculate the [HNO3] in each aqueous solution at 25C and classify each solution as acidic or basic

Reviews

Write a Review

Chemistry Questions & Answers

  What mass of alcl3 can be formed

What mass of AlCl3 can be formed from 5.000 mol NiCl2 and 2.000 mol Al?

  Explain what are the two nuclear reactions

The neutrons interact with with 6Li to produce tritons (nuclei of 3H), which, in turn, interact with the oxygen to produce 18F. What are the two nuclear reactions?

  Calculate the enthalpy of vaporization of ethanol

the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol

  Calculate the number of moles of hydrogen produced

At a certain temperature, the equilibrium constant for the reaction 2HI(g)39. At a certain temperature, the equilibrium constant for the reaction 2HI(g) H2(g) + I2(g) is 0.49.

  Does this violate the law of definite proportions

would a given amount of flourine react with different masses of the two hydrogen isotopes? Does this violate the law of definite proportions.

  How many kilojoules are released

How many kilojoules are released when 10.0g of steam condenses at 100 degrees C and cools to 0 degrees C?

  How much heat is released by 6.60 g of propane

The combustion of one mole of propane, C3H8 (Molar mass 44 g mol-1) releases 2230 kJ. How much heat is released by 6.60 g of propane?

  What is the concentration of hydroxide ions

At 25 c the ion product of water, Kw is 1.9 x 10^-14. What is the concentration of hydroxide ions in a solution where the concentration of hydrogen is found to be 5.0 x 10^-15 mol dm^-3.

  How many milliliters of hno3 would you add

How many milliliters of 6 M HNO3 would you add to 300 mL of the buffers solution to change the pH from 5.09 to 5.03?

  What is the water solubility of d-alanine

the water solubility of L-alanine is 127g/L at 25 degrees celsius, what is the water solubility of D-alanine at 25 degrees celsius?

  Which student measures the larger density

Two students measure the density of gold. One works with a 100-g bar of pure gold. The other works with a 200-g bar of pure gold. Which student measures the larger density.

  Explain nitric acid is usually purchased in a concentrated

Nitric acid is usually purchased in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd